Stave-jointing machine



STAVE JOINTING MACHINE.

No. 524,982. Patented Ag. 21,

(No Model.) l s sheets-sheen 2.

. I. A. KEER.

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(No Modem 3 sheets-sheen s. I. 2.1mm. STAVE JOINTING MACHINE. No. 524,982. .Patented Aug. 21, 1894.

i lllhllllm H Wj'zmesses Inventor [Saad t Herr By las Jaar/zeges.- WM

c as shown.

`tive view of one of the knife bars.

UNITED STATES,

PATENT OFFICE.

`IsAAo A. KEER., on MUsoAfrINE, iowA.

4sTAvE-.lolrarllue MACH|N E.

' SPECIFICATION forming part of Letters Patent No. 524,982, dated August 21, 1894.

` Application and May 6,1893. serial 110.473,232. iN@ man.)

To all whom, it mayhooncern;

Be it known that I, IsAAc A. KEEP., `ot Mnscatine, in the county of Muscatine and State of Iowa, have invented certain new and useful Improvements in Stave-Jointing Machines; and Ido hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification'.

This invention is an improved machine for jointing staves for barrels, boxes and other bulged or plain cylindrical vessels, also adapted for cutting straight sided slatsfor boxes, &c., and it consists in the novel construction and combination of parts hereinafter described in detail andillnstiated in the accompanying drawings, in which- Figure 1 is a right hand end view of the machine. Fig. 2 is a transverse vertical sectional View of the machine on line 2-2 Fig. 3. Fig. I3 isa rear elevation. Fig. 4 is a detail of the ratchet devices for actuating the feed roll. Fig. 5 is a vertical sectional View through one endof the m'achine in the line of the main shaft. Fig.` 6 is a detail perspec` Fig. 7 is a similar view of the bed. Fig. 8 isa detail sectional View through thefeed roll carrying frame. Fig. 9 is a detail view of one of the swinging frames F. l

, Referring to the drawings by letters, A, A, designate the end pieceskof the frame, preferably made of metal and rigidly connected by horizontal side bars or in other suitable manner. y y

B designates a bed which is much narrower than the frame and is mounted therein, its ends being supported on vertically adjustable bolts C tapped through bracketsc on the inner faces, and about center, of the end pieces A, as shown. The bed iskept from lateral movement by means of bolts b tapped into its ends, and playing through-short vertical slots b in the end pieces A'above the brackets The vertical adjustment of the bed is'thus provided for. On the upper side of the bed are placed cutting ,blocks D of wood, orgother suitable material against whichthe cutting blades of the machine act, said blocks being removably secured in position by means of bolts d tapped through the rear one of the side flanges B on the bed, the flanges preferably being turned outward at top.so as to protect the bolts, and to increase the width of the beds.

The bed is preferably made of cast metal f and very stiff so that it will not yield when the staves are being cut thereon.

E, and H, are the front and rear knife bars, arranged parallel with and at opposite sides of the bed, as shown. A Bar E has guide blocks E on its ends that are mounted in ways formed in guide frames F which are pivotally secured by bolts F' to the end pieces A; bolts F lie opposite the ends of the bed and below the top surface of the latter, anges B being cut away as at B2 to accommodate the lower endsof the guide frames, so that they can be adjusted to aver- 'tical position and the knife bar E overlie the bed.

The upper ends of guide frames F are adj ustably secured to the tops of pieces A, by means of bolts f, which pass through short slots f in the upper part of end piecesv A, and through openings in the tops of the guide frames, and are secured by nuts f; by this means the guide frames F can be adjusted so that the knife bar will be reciprocated in a Vertical plane toward and from the bed, or in a plane slightly inclined thereto. Guide frames F lie at the inner sides of pieces A, and blocks E are provided with outwardly extending portions E2 in which are secured wrist pins g to which are connected the upper ends of pitmen g the lower ends of which are connected to eccentric straps G embracingeccentrics Gfxed on the outer ends of the main shaft S, which lies parallel with and below the bed which is journaled in suitable bearings in or on pieces Aso that when said shaft is rotated, the knife barE will be reciplower ends of guide frames I can be `adjusted toward or from the frames E, and thus different widths of staves can be cut by the same machine..

The upper ends of guide frames l are adjustably connected to the frames by bolts t' which pass through short slots t" in the upper portion of end pieces A, and are secured by nuts i2 as shown. By this means the guide frames I can be adjusted so that knife barH will be reciprocated in a vertical plane toward and from the bed, or in aplane slightly inclined thereto. Guide frames I lie at the inner sides of pieces A, and blocks H are provided with outwardly extending portions H2 in which are secured wrist pinsj to which are connected the upper ends of pitmen j, the lower ends of which are connected to eccentric straps K embracing eccentrics K fixed on the shaft S beside eccentrics G, and preferably turned a little in advance of the latter so that the knife bars will not move exactly together, but one knife will be caused to cut somewhat in advance of the other.

e, and h, designate the knives, of any suitable cons'tr'uction adjustably secured to the opposed faces of bars E and H by screws or bolts e and h respectively, passing through transverse slots on the blades, and adjusting bolts e h are tapped through the knife bars above the blades to compensate for wear thereof. y

The stock to be operated upon is fed beL tween the knife bars and bed by means of rolls L, and l, which are journaled in boxes L Z respectively, said boxes being mounted in guide slots in guide frames M 'which guide franjes are pivoted at their lower end'syon bolts M attached to the end pieces A below andin front of lthe bed and on the outer faces of pie'ces A. In the upper ends 'of'` guide frames M are Vshort slots m through which pass bolts m that also engage slots m2 in the pieces' A, said slots m2 being made on arcs of circles struck from bolts M whereby guide frames M can be secured in av vertical position, so that the rolls will properly feed vthe stock, or can be swung outward so as to draw the roll away from the bed out of the way.

and ready access can' be had to the knife bar E and bed without removing the feedrolls fr'orn ythe machine, or altering their relative adjustment; A

Roll L is preferably grooved or roughened and is' the positively driven roll; it 'can be vertically adjusted in guide frames M by means ot' bolts M3 tapped through the lower ends of theframes and impinging against boxes L as shown. The roll Z is pressed toward roll Lby means of .springs I2 interposed between its boxes Z" and the upper ends of the guide slots. The tension of said springs can be regulated by bolts .13 tapped through the upper endl wall of the guide slot as shown.

The shaft of roll L is extended at one end beyond the guide frame, and upon its extremity is 'secured a notched pinion N. This pinion is engaged by aspringcontrolled tooth N which is secured in a seeket frz/'on the outer end of a rocking arm fn which is journaled on the roll shaft intermediate the pinion N andbox L. The armis vibrated or rocked, by means of a pitman O which is attached at one end to a wrist pin O on the tion, and rides -thereo'ver when the motion of the arm is reversed. Driving and idler pulleys s, s may be mounted on the other end of shaft S.

The machine is designed to operate on 'veneer,- or other suitable stuffs, and the parts are so adjusted that rolls L, Z, will be operated and feed in a proper lengthvof stock .while the4 knife bars ascend, or are sufficiently above the bed to not interfere with the incoming stock. While being' cut the 'stock is kept down on the bed by means of presser feet P on the lower ends of rods p, which are adjustal'lly` secured to a transverse bar p overlying the bed and mountedon the nain frame as shown.

Inmaking straight slats, guidefranes F and I are adjusted to averticfal position, so that knife bars E and H will be reciprocated in planes perpendicular to the bed. When making staves lfor barrels or other circular articles the guide frames F and I are adjusted so that they move in planes inclined to the bed, and divergent` from each other more or-less according to the-size of the vessel; they will then make bevel or incline cuts on the edges of the staves s'o that closely nt ting joints will be made between the staves when assembled and bound together. When making bulged barrels or other vessels the knives e, h,are sprung laterally, 'so that their ends will be nearer together than their een? ters, and consequently the staves produced will be wider at center than at their ends.

By adjusting the lower ends of guide frames nearer together, or farther-apart, the staves, of any desired width, within certain limits, can be produced. Bysetting the knife bars nearer together at one end only, tapered staves or slats can be made When cutting straight slats with straight edges, one knife can be thrown out of action, or removed, and the width of slats produced regulated by adjusting the throw of pitman O. Y y

By thisv machine the staves can be join'ted and cut at the same operation and one will be made for each 'revolution of shaft S, the feed and cutting being entirely automatic the WOrl Cali be (1011 With rapidity and With perfect accuracy.

In large machines it may be found desirable to make the pitmen which operate the knife bars in longitudinally adjustable sections to allow free adjustment ofthe knife bar guide frames and theV proper reciprocatlng movements thereof, without binding; but the bed can be vertically adjusted so vas to compensate for any slight variation in the throw of the knifebars caused by the swinging of the guide frames.

Having described my invention, what I claim as new, and desire to secure by Letters Patent thereon, is l l 1. In a stave jointing machine the combination of a stationary bed, with an adjustable swinging guide frame at-each end` thereof, a reciprocating knife bar mounted in said frames, and adjustable therewith whereby it can be caused to operate in planes either per# pendicnlar or inclined to said bed; and a pair of feed rolls mounted in swinging guide frames at one side of and adjustable toward or from the bed, substantially as and forthe purpose set forth.

2. The combination with the horizontal bed, of a pair of opposite but substantially vertically reciprocating knife bars, and independently adjustable swinging guides for said knife bars whereby they can be caused to opcrate in planes perpendicular, or inclined to the bed, and a pair of feed rolls mounted in swinging supports adj ustable toward or from the bed, all constructed and arranged to opratle substantially as and for the purpose set ort 3. In a stave jointing machine the combination of the main frame, the horizontal bed mounted therein, a vertically reciprocating knife-carrying bar parallel with the bed, independent laterally swinging guide frames for said knife-bar pivoted to the main frame at each end of the bed, the main shaft below the bed, and eccentrics and pitmen for reciprocating said bar, and the presser bar, and feed rolls mounted in independent laterally adjustable frames beside the bed, substantially as specified.

4. The combination of the main framethe horizontal bed thereon, the pairs of swinging guide frames F and I pivoted at their lower ends to the end pieces of the frame on opposite sides of the bed, and the bolts in the upper ends of said frame engaging slots f t" respectively in the end pieces of the main frame the reciprocating knife bars E and H, the` knives thereon; and main shaft, eccentrics G, K, and connections for operating said knife bars from said eccentrics, all constructed substantially as and for the purpose described.

5. The combination of the main frame having slotted end pieces the vertically adjustable bed B, the swinging frames F, I, pivoted to said end pieces beside the bed and the bolts f, t', in the upper ends of said frames engaging slots f i', in said end pieces, the reciprocatin g bars E, H, mounted in said frames, and

`the knives carried by said bars; with the main shaft S, the pairs of eccentrics G and K on each end thereof, and the eccentric straps G K' and pitmen g, j, connecting said straps to the bars E, H, all constructed and arranged substantially as described.

` 6. The combination with a vertically adjustable bed, a pair of reciprocating knife bars, laterally swinging guide framesfor said bar independently adjustable toward or from each other, and mechanism for reciprocating said bars, and feed rolls mounted in laterally swinging frames and adjustable toward or from the bed, and means for securing said frames when adjusted, substantially as and for the purpose specified.

7. The combination with the vertically adjustable bed, the reciprocating knife bars at opposite sides thereof, knives on said bars laterally swinging guides for said knife bars, a main shaft, eccentrics thereon, and pitman connections between said eccentrics and knife bars for operating thelatter, the feed rolls mounted in a laterally swinging frame, a ratchet pinion on one roll, and a pitman and .crank disk for operating said roll from the main shaft, substantially as specified. p

8. In a stave jointing machine the combination of a horizontal adjustable bed, laterally swinging guide frames at each side thereof, knifel bars mounted in said guide frames, a pair of laterally vswinging frames pivoted below and to one side of said bed, and feed rollers mounted in said frames; with the main shaft below the bed, a pair of eccentrics thereon at each end of the machine, and eccentric straps and pitman for operating said knife bars from said eccentrics; a slotted disk ISAAC A. HERR.

Witnesses:

CHARLES A. MULL, JOHN MARKMENON.

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